Conceiving-Sex Tips-Health Tips

Hi! I need some advice. My wife and I want to have another baby. We've been trying for 5 weeks now. We already had two pregnancy tests and both turned out negative.

We never had any family planning pill. We had our firstborn in 2023, 6 months after our marriage she became pregnant. It was unplanned. Last December we wanted to have another baby in 2025, and until now, nothing. I think I am the problem because in 2023 I was physically well and active, within my normal BMI, and around 75 kg. Now, I am 79-80kg. My wife and I are in our early 30s now. I think I need to lose weight, yes but we want to have a baby sooner.

Our sex life is great, before our firstborn 5 to 7x a week. but lately, it has become 3-4x a week. I need some advice on how to conceive, probably some health tips or sex tips. If we won't conceive before March. We will see a fertility doctor. Please advise. Thank you!