Low sex drive

Evert since I got pregnant with our two year old daughter i have had a really low sex drive. Now TTC again since almost a year (no results apart from a mc) and its really hard to get results when your not feeling like it at all (except for two days/period during ovulation, luckily!). Ok, so i wasnt the most sexually active before either, but this leads to frustratingly little close occasions with husband :( We do argue a LOT as well, dont know if this leads to less sex or if little sex leads to much arguing.. Just pouring it our there now, anyone got some thoughts?