Despite being dismissed for a second bookable offence against Bayer 04 Leverkusen on Matchday 20, the midfielder is available to feature at the rewirpowerSTADION in the DFB Cup last eight.
"We took one more point [against Leverkusen]," Alonso, 34, said. "It could have been better but that’s how it is."
The Spaniard netted the goal which secured Bayern a place in the quarters with a brilliant strike in the 1-0 victory against SV Darmstadt 98 in the last 16, but is aware that second-division outfit Bochum will prove just as tough a test as any Bayern have faced recently.
"Bochum is an important game because we want to get to the next round of the Cup. We're in the quarters now and even though they're from Bundesliga 2 it will be a difficult game. Now we are in the rhythm of a game every three days and we know that's complicated."
Guardiola wary of Bochum's 'quality'
His comments were echoed by Bayern coach Pep Guardiola at his press conference prior to the trip to North Rhine-Westphalia.
"In the Cup you just get one game," said Guardiola. "For that reason it's like a final. It will be a tough game but I'm confident in my team.
"Bochum have quick players out wide and a lot of quality in the centre. [They're going to play] forward, forward, forward. They'll be very aggressive.
"We hardly gave away any chances in Leverkusen, though. That was a step forward."
Despite suffering an injury against Die Werkself, Arturo Vidal will travel, but new signing Serdar Tasci is not completely match fit yet. Although both are back in training, neither Mario Götze nor Franck Ribery will make the trip north.
Bochum coach Verbeek bullish
Bochum currently sit fifth in the second tier and are unbeaten in the last four league games, a state of affairs which means coach Gertjan Verbeek approaches his side's sternest test this season in bullish mood.
"Plenty of people are saying that we have nothing to lose," said Verbeek at his pre-match press conference. "But we have a chance of playing in the semi-finals to lose. Of course it's going to be tough: Bayern are one of the best teams in Europe.
"That said, we'll be allowed to play our game against them which is good. It'll be a good match to watch. I’d rather play twice a year against Bayern, though. That's what we're working towards. But we're not quite there yet so you need to make the most of these sort of cup games.
"We want a good result and that means that we have to keep believing right until the very end that anything is possible."