Elly, you mentioned odour, if it's got a fishy smell then you may have bacterial vaginosis, which would cause a lot of watery discharge too, to try and get rid of it. It can be worse during sex. This happened to me a long time ago, thankfully my partner laughed about it and I'm sure was relieved when we were told it was because I was too clean that it was happening, I was using lots of soap! I was told to use none in that area and use a bit of lemon juice (ouch, inside the vagina, nowhere else or there'll be cystitis) to restore the acid to the vagina, as too much washing can make it alkaline and that's when this happens. It resolves quickly.
the other thing watery discharge can be is due to lack of oestrogen in the vaginal area, and if so, vaginal oestrogen cream or pessaries can help, plus they will restore the natural balance and make infections less likely. If you do have prolapse, vaginal oestrogen may help that if it's only just occuring.
Try and talk to your partner if you can, if he's the right one he'll understand, not easy I know. I hope a month from now things are more settled for you.