*I say MOST and not all because there are things like endometriosis, hypothyroidism, and PCOS that affect women’s periods. Just wanted to make that clear

Short answer, no.. As a woman in her 30’s, I’ve only recently found out this year that (most, not all) heavy/painful periods are due to the lining not fully expelling itself from the previous period. The blood has congealed and has a harder time getting out. This is why yoni steaming (basically hot tea steam for your vagina) is incredibly beneficial. It loosens up the mucus/old blood and allows for everything to come out during your next cycle. This is based off my second hand knowledge from a doula, so I hope my explanation is useful.

Also- to add on to what a few other people said about their flows and pregnancies.- I have a light flow and was INCREDIBLY sick almost my entire pregnancy. Birth was really rough. That’s due to hormones though. I’m pregnant right now, and although I’m not as sick as the first time, I still feel nauseous all day long. The first one was a girl, I think this one will be a boy since the hormones are so different. Shrug Every body is different. Everyone’s hormones are different. The lining doesn’t have anything to do with an “easier” pregnancy.