Irregular period after ovarian cyst removal?

I had a 12cm ovarian cyst removed on December 21st and for date purposes my period had started on December 20th. The surgery went well, they got the cyst out without having to take the ovary, but while they were in there they found out I have really bad endometriosis. I had always had fairly heavy cycles and had mild cramps ever since I started when I was 10, I'm 20 now btw.

My question is, is the first period after the removal usually heavier/ more painful. Mine started on the 15th this month and it has been wicked heavy and I've had wicked bad cramps, like bad enough to wake me up at night. (To put this in perspective I'm on a 50mcg fentynal patch for other medical issues, and I have dilaudid for break through pain.) Now my periods usually are fairly heavy, like a super tampon every 3-4 hours. This period has been a super plus tampon barely making it to 2 hours without leaking. Is this normal for after the surgery? I go back to the OBGYN on Tuesday to begin hormone injections for the endometriosis and I will ask her then, but until then I would like an answer. Thank you for any input you can give.