Feeling a little frustrated

We’re TTC our 2nd baby. Our daughter just turned four and now that she no longer needs heart surgery we’re ready to grow our family. With her it only took 3 months off of birth control to get pregnant. I had no warning signs. I passed out in the shower 2 weeks before my period was due with her. This go round everything is different. My period is irregular and my migraines are so much worse. My period was late this week. I spotted for 2 days and was nauseous for 3 and I’m still nauseous. I thought this was it. I tested this morning and it’s negative and then after throwing up all day from my horrendous migraine I got my period. I’m feeling so bummed. I’m still nauseous even though my headache is gone. We’ve been trying for 5 months now. I know that’s not long but it only took 3 months with our daughter and every single woman in my family, my mom included, gets pregnant on the first try. I could use some encouragement. I’d like to hope that my period will stop and there still a chance and it’s too early to test but I highly doubt that. Everything is so different this go round that I don’t know what to look for. I’m using numerous apps to track so I can try to pinpoint ovulation and nothing. Any advice?