Newbie at ttc

SO and I have recently just decided to activity ttc, I've been other BC injection since May with last injection being around Feb time. We weren't ttc but hadn't tried to prevent it as it can take up to a year after the injection to regulate.. My SO is just not all clued up on BC and sex becomes such a chore if I'm constantly on about my fertile week instead of making it interesting. Sorry this is so damn long😭 anyway ladies as a ttc newbie what I'm asking is from your experience what are the best prenatal vitamins? What is the best to test for ovulation? What herbal remedies are good for regulation of periods? I'm not a huge fan of taking medications and would much prefer advice of herbal remedies to kick start the baby making I had a chemical in June and would really like for my little peanut to stick next time round..

Any advice is appreciated in advance