Ouch. Sounds awful.
Don't know why it felt better and now suddenly hurts from the information provided.
Seek out medical care for answers.
Perhaps with your injury you were starting to heal. Then you started to resume normal activities too soon while recovering and this set you back. Without an evaluation, as mentioned above, by a health care provider, you won't know the cause of the pain or extent of the injury. Please see a doctor to be evaluated and back off a little on the house cleaning and especially riding your horse. It's OK to groom and walk him, but not ride him where your hips/pelvis is spread since we don't know what is injured.
You can try some ice or heat compresses to the areas that hurt while you are waiting for an appt. Use only for 20 minutes at a time for 4 x/day. You will probably find that one works better that the other. Let us know how you do.