Feeling worried

I'm 6w4d today, had scan on Thursday and got to see heartbeat. I'm on progesterone suppositories after 8 previous losses. For the past few days I've been so nauseous I have barely eaten anything and most foods have made me heave. I went for a nap this afternoon and when I woke up the nausea was gone, like someone had flicked the 'off' switch. The foods that made me heave don't bother me now either, and twice when I've been to the toilet there's been brown spotting and cramps afterwards. Has anyone had similar and all been okay? I'm calling early pregnancy unit in the morning to see if they'll scan me again to put my mind at rest but just spent the past hour in tears :(