I usually have nausea pretty bad each feed for the first few weeks, along with pain as well, so I'm not a fan.

However, the nausea finally subsided after a few months so I was able to continue until she weaned at 23 months.

But she was the only one out of the 4 that I did breastfeed - I fed DS for 2.5 days, then formula fed, DD1 was formula fed from birth, DD2 was mixed fed for the first month and then fully formula fed. I say as long as you are happy it doesn't really matter how the baby is being fed.

If it doesn't work this time, I'm not going to stress out about it, nor am I going to let anyone make me feel guilty about whatever choice I have to make.

Do whatever you need to.